code: def get_parser():
      parser = argparse.ArgumentParser(
          description="dump PCM files from a WAV scp file",
          formatter_class=argparse.ArgumentDefaultsHelpFormatter,
      )
      parser.add_argument(
          "--write-num-frames",
          type=str,
          help="Specify wspecifer for utt2num_frames",
      )
      parser.add_argument(
          "--filetype",
          type=str,
          default="mat",
          choices=["mat", "hdf5", "sound.hdf5", "sound"],
          help="Specify the file format for output. "
          '"mat" is the matrix format in kaldi',
      )
      parser.add_argument(
          "--format",
          type=str,
          default=None,
          help="The file format for output pcm. "
          "This option is only valid "
          'when "--filetype" is "sound.hdf5" or "sound"',
      )
      parser.add_argument(
          "--compress",
          type=strtobool,
          default=False,
          help="Save in compressed format",
      )
      parser.add_argument(
          "--compression-method",
          type=int,
          default=2,
          help="Specify the method(if mat) or " "gzip-level(if hdf5)",
      )
      parser.add_argument(
          "--verbose", "-V", default=0, type=int, help="Verbose option"
      )
      parser.add_argument(
          "--normalize",
          choices=[1, 16, 24, 32],
          type=int,
          default=None,
          help="Give the bit depth of the PCM, "
          "then normalizes data to scale in [-1,1]",
      )
      parser.add_argument(
          "--preprocess-conf",
          type=str,
          default=None,
          help="The configuration file for the pre-processing",
      )
      parser.add_argument(
          "--keep-length",
          type=strtobool,
          default=True,
          help="Truncating or zero padding if the output length "
          "is changed from the input by preprocessing",
      )
      parser.add_argument("rspecifier", type=str, help="WAV scp file")
      parser.add_argument(
          "--segments",
          type=str,
          help="segments-file format: each line is either"
          "<segment-id> <recording-id> <start-time> <end-time>"
          "e.g. call-861225-A-0050-0065 call-861225-A 5.0 6.5",
      )
      parser.add_argument(
          "wspecifier", type=str, help="Write specifier"
      )
      return parser
  
file_path: espnet/utils/dump-pcm.py
imports: import argparse
  import logging
  from distutils.util import strtobool
  import kaldiio
  import numpy
  from espnet.transform.transformation import Transformation
  from espnet.utils.cli_utils import get_commandline_args
  from espnet.utils.cli_writers import file_writer_helper
label_desc: Use image node_id 1 for calling a global function with example usage: get_parser() and returns: parser